CN101236342A - LCD unit matrix and LCD device embodying the matrix - Google Patents
LCD unit matrix and LCD device embodying the matrix Download PDFInfo
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- CN101236342A CN101236342A CNA2008100340633A CN200810034063A CN101236342A CN 101236342 A CN101236342 A CN 101236342A CN A2008100340633 A CNA2008100340633 A CN A2008100340633A CN 200810034063 A CN200810034063 A CN 200810034063A CN 101236342 A CN101236342 A CN 101236342A
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- 239000011159 matrix material Substances 0.000 title claims abstract description 34
- 239000010409 thin film Substances 0.000 claims abstract description 57
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 50
- 210000002858 crystal cell Anatomy 0.000 claims description 29
- 230000004044 response Effects 0.000 claims description 16
- 239000010408 film Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 206010047571 Visual impairment Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 101150022676 CSTB gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 101150084890 cstA gene Proteins 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The present invention discloses a liquid crystal unit matrix and a liquid crystal display device comprising the same, which not only ensures the time of inputting image data, but also saves the cost of a second grid driver. The technical proposal is that: the liquid crystal unit matrix comprises a scan line for providing a scan signal, a data line for providing a data signal, a common line for providing a common voltage, a pixel electrode, a first thin film transistor responsive to the scan line of a current row, a second thin film transistor responsive to the scan line of the next row, wherein, a source electrode of the second thin film transistor is used for receiving the data signal; a third thin film transistor responsive to the scan line of the current row, the source electrode of the third thin film transistor is connected with the drain of the second thin film transistor, wherein, the data signal of the data line is provided to the pixel electrode of the current row by the second thin film transistor and the third thin film transistor, the common voltage of the common line is provided to the pixel electrode of the next row by the first thin film transistor. The liquid crystal unit matrix and the liquid crystal display device are application in the liquid crystal display device filed.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, relate in particular to a kind of liquid crystal indicator of eliminating the motion blur phenomenon that afterimage produced of previous frame.
Background technology
Liquid crystal has the characteristic of double refractive inde, and under different electric fields, has different arrangement modes.LCD utilizes liquid crystal light valve that transmittance is controlled, thus display image.The conventional liquid crystal structure comprises as shown in Figure 1: LCD panel 10, and it has gate drivers 20, is used to drive the sweep trace GL of LCD panel 10; Data driver 30 is used to drive the data line DL of LCD panel 10; And timing controller 40, be used for control gate driver 20 and data driver 30.
The liquid crystal display board component comprises a plurality of pixels (Pixel), and described pixel is connected in many display signal lines and with arranged.Display panels also comprises the array base palte of opposed facing lower panel and the colored filter substrate of top panel in addition, and is clipped in two liquid crystal layers between the substrate.
Gate lines G L1 extends parallel to each other on first direction to GLn, and data line DL1 extends parallel to each other on DLm is substantially perpendicular to second direction on the first direction.
In the equivalent circuit diagram synoptic diagram that display signal line and pixel are shown of Fig. 2, except gate line and data line, shows signal also comprises the storage electrode line VCom that is arranged essentially parallel to gate line.
Each pixel (Pixel) comprises pixel electrode, comprises the switching device that is connected in pixel electrode, many gate lines, and the first grid polar curve of these gate lines is connected in pixel electrode; And many data lines, these data lines intersect with gate line and transmit data voltage, one of these data lines are connected in switching device, and the memory capacitance Csta of storage electrode line VCom and Cstb, also have liquid crystal capacitance Clca and Clcb, memory capacitance and storage electrode line can be omitted as required.
Switching component in the pixel can be constructed with thin film transistor (TFT), each switching device is three port devices, and it has the control port that is connected in gate line, is connected in the input port of data line and is connected in liquid crystal capacitor and the output port of memory capacitance.
In order to realize colored demonstration, each pixel shows the primary colors of appointment uniquely, and by the different color of being combined to form of different primary colors, primary colors generally includes red green and blue.
Thereby gate drivers 20 is connected in gate line and will be applied on the gate line with the signal that is combined to form of grid cut-in voltage and gate off voltage.Grayscale voltage generator (not shown) produces the grayscale voltage collection corresponding to the pixel transmission rate, and grayscale voltage is applied in pixel capacitors.Data driver 30 is connected in the data line of LCD panel, thereby the grayscale voltage that two grayscale voltages of choosing gray-scale generator are concentrated imposes on pixel as data-signal, and data driver 30 is by selecting data voltage in the grayscale voltage of dividing reference gray level voltage and producing.
The display operation principle of traditional LCD is as follows.
Picture signal R, G that the signal controller handle receives from the outside and B and the input control signal that is used to control demonstration, these picture signals have been represented the monochrome information of each pixel, just specific GTG, input control signal generally comprises vertical synchronization and horizontal-drive signal, and data enable signal (DE), signal controller receives these signals and produces grid control signal and data controlling signal later on, and can pass to gate drivers 20 and data driver 30 respectively.
Grid control signal comprises and is used to represent the signal that a frame scan begins and is used for the signal that control gate line is opened the time.Data controlling signal comprises the horizontal start signal of the data transmission that is used to represent delegation's sub-pixel, is used for providing to pixel the load signal of charging voltage, and data clock signal and polarity inversion signal etc.Response is from the data controlling signal of signal controller, data driver 30 receives the view data that is used for one group of word pixel, and choose one of two gray scale voltage collection from the gray scale voltage generator, and therefrom choose the pairing gray scale voltage of view data, resulting voltage is applied on the relevant data line.
LCD is a sampling maintenance display device, and the problem of its existence is that the afterimage of previous frame has produced the motion blur phenomenon.In order to eliminate the motion blur phenomenon, the LCD of prior art has been used the driving method that inserts black data.A kind of method is by improving frame rate black data to be inserted between the frame, but this will shorten the time that view data charges into.Another kind method is that each liquid crystal cells increases a thin film transistor (TFT) TFT, by the switch of this thin film transistor (TFT) of second grid driver control TFT, thereby inserts black data.The advantage of this method is the time that has guaranteed that view data charges into, and shortcoming is the expense that has more the second grid driver, has increased cost.
Summary of the invention
The objective of the invention is to address the above problem, a kind of liquid crystal cell matrix is provided, both guaranteed the time that view data charges into, saved the cost of second grid driver again.
Another object of the present invention is to provide a kind of liquid crystal indicator, comprise above-mentioned liquid crystal cell matrix, both guaranteed the time that view data charges into, saved the cost of second grid driver again.
Technical scheme of the present invention is: the present invention proposes a kind of liquid crystal cell matrix, comprising:
The sweep trace of sweep signal is provided;
The data line of data-signal is provided;
The concentric line of common electric voltage is provided;
Pixel electrode;
The first film transistor is in response to the sweep trace of current line;
Second thin film transistor (TFT), in response to the sweep trace of next line, source electrode receives data-signal;
The 3rd thin film transistor (TFT), in response to the sweep trace of this current line, source electrode links to each other with the drain electrode of this second thin film transistor (TFT);
Wherein provide the data-signal of data line to the pixel electrode of current line, the common electric voltage of concentric line is provided to the pixel electrode of next line by the first film transistor by this second thin film transistor (TFT) and the 3rd thin film transistor (TFT).
Above-mentioned liquid crystal cell matrix, wherein, the transistorized grid of this first film is connected to the sweep trace of this current line, and source electrode is connected to this concentric line, and drain electrode is connected to the pixel electrode of this next line; The grid of this second thin film transistor (TFT) is connected to the sweep trace of this next line, and source electrode is connected to data line; The grid of the 3rd thin film transistor (TFT) is connected to the sweep trace of this current line, and drain electrode is connected to this pixel electrode.
The invention allows for a kind of LCD, comprise a plurality of liquid crystal cell matrix, those liquid crystal cell matrix are arranged with matrix form, and those liquid crystal cell matrix include:
The sweep trace of sweep signal is provided;
The data line of data-signal is provided;
The concentric line of common electric voltage is provided;
Pixel electrode;
The first film transistor is in response to the sweep trace of current line;
Second thin film transistor (TFT), in response to the sweep trace of next line, source electrode receives data-signal;
The 3rd thin film transistor (TFT), in response to the sweep trace of this current line, source electrode links to each other with the drain electrode of this second thin film transistor (TFT);
Wherein provide the data-signal of data line to the pixel electrode of current line, the common electric voltage of concentric line is provided to the pixel electrode of next line by the first film transistor by this second thin film transistor (TFT) and the 3rd thin film transistor (TFT).
Above-mentioned LCD, wherein, for each liquid crystal cell matrix, the transistorized grid of this first film wherein is connected to the sweep trace of this current line, and source electrode is connected to this concentric line, and drain electrode is connected to the pixel electrode of this next line; The grid of this second thin film transistor (TFT) is connected to the sweep trace of this next line, and source electrode is connected to data line; The grid of the 3rd thin film transistor (TFT) is connected to the sweep trace of this current line, and drain electrode is connected to this pixel electrode.
Above-mentioned LCD wherein, when sweep trace n and n+1 are applied high voltage simultaneously by one scan line signal, is positioned at the pixel electrode P of this sweep trace n
nCharged into view data, be positioned at the pixel electrode P of this sweep trace n+1
N+1Charged into the common electric voltage data; When sweep trace n+1 and n+2 are applied high voltage simultaneously by this scanning-line signal, be positioned at the pixel electrode P of this sweep trace n+1
N+1Quilt is charged into view data and is remained to the moment that pulse next time arrives, and wherein n is a natural number.
Above-mentioned LCD wherein, when this scanning-line signal is applied to wherein sweep trace, begins to apply another scanning-line signal successively so that pixel electrode charges into the common electric voltage data successively from article one sweep trace.
The present invention contrasts prior art following beneficial effect: the present invention is by the second and the 3rd thin film transistor (TFT), control pixel electrode respectively and charge into view data and common electric voltage data, and can not shorten the time that pixel electrode charges into view data, do not increase cost thereby do not need to increase the second grid driver yet.The contrast prior art, the present invention provides the data-signal of data line by the second and the 3rd thin film transistor (TFT) to the capable pixel electrode of n, and the common electric voltage of concentric line is provided to the capable pixel electrode of n+1 by the first film transistor.
Description of drawings
Fig. 1 is the structural drawing of traditional LCD.
Fig. 2 is the structural drawing of the liquid crystal cell matrix of LCD of the present invention.
Fig. 3 is the oscillogram of one scan line drive signal of the present invention.
Fig. 4 is the oscillogram of another scan line driving signal of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 2 shows the structure of liquid crystal cell matrix of the present invention.See also Fig. 2, liquid crystal cell matrix P1 comprises: the sweep trace G_n (n is a natural number) that sweep signal is provided; The data line D_n of data-signal is provided; The concentric line V-Com_n of common electric voltage is provided; Thin film transistor (TFT) TFT-n+1_1A grid is connected to sweep trace G_n, and source electrode is connected to concentric line V-Com_n, and drain electrode is connected to the pixel electrode of liquid crystal cell matrix P2, and thin film transistor (TFT) TFT-n+1_1A is in response to the n horizontal scanning line and provide common electric voltage to pixel electrode; Thin film transistor (TFT) TFT-n_1B grid is connected to sweep trace G_n, source electrode is connected to the drain electrode of thin film transistor (TFT) TFT-n_1C, drain electrode is connected to the pixel electrode of liquid crystal cell matrix P1, and thin film transistor (TFT) TFT-n_1B is in response to n bar sweep trace and provide data-signal to pixel electrode; Thin film transistor (TFT) TFT-n_1C grid is connected to sweep trace G_n+1, and source electrode is connected to data line D_n, and drain electrode is connected to the source electrode of thin film transistor (TFT) TFT-n_1B, and thin film transistor (TFT) TFT-n_1C receives data-signal in response to the n+1 horizontal scanning line and by source electrode.
Liquid crystal cell matrix P2 comprises: the sweep trace G_n+1 that sweep signal is provided; The data line D_n of data-signal is provided; The concentric line V-Com_n+1 of common electric voltage is provided; Thin film transistor (TFT) TFT-n+2_1A grid is connected to sweep trace G_n+1, and source electrode is connected to concentric line V-Com_n+1, and drain electrode is connected to the pixel electrode of liquid crystal cell matrix P3; Thin film transistor (TFT) TFT-n+1_1B grid is connected to sweep trace G_n+1, and source electrode is connected to the drain electrode of thin film transistor (TFT) TFT-n+1_1C, and drain electrode is connected to the pixel electrode of liquid crystal cell matrix P2; Thin film transistor (TFT) TFT-n+1_1C grid is connected to sweep trace G_n+2, and source electrode is connected to data line D_n, and drain electrode is connected to the source electrode of thin film transistor (TFT) TFT-n+1_1B.
As shown in Figure 2, these liquid crystal cell matrix P1, P2, P3 etc. constitute liquid crystal indicator with matrix-style, certainly other for example substrate etc. also be one of parts of liquid crystal indicator, other parts are identical with traditional liquid crystal indicator, therefore repeat no more.
The drive principle of liquid crystal indicator of the present invention is described below in conjunction with Fig. 3 and Fig. 4.When applying as shown in Figure 3 high voltage for simultaneously sweep trace G_n, G_n+1, pixel electrode P1 is charged into view data, and pixel electrode P2 is charged into the common electric voltage data; But when applying as shown in Figure 3 high voltage for simultaneously sweep trace G_n+1, G_n+2, pixel electrode P2 is charged into view data immediately and is retained to the moment of scanning impulse arrival next time, it is very short that pixel electrode P2 is charged into the time of common electric voltage data, can't be discerned by human eye.
If display panels has m bar sweep trace (m is a natural number), (x is a positive integer when sweep signal shown in Figure 3 is applied to G_x bar sweep trace, concrete numerical value can be adjusted according to control signal), begin to apply successively as shown in Figure 4 sweep signal from article one sweep trace, pixel electrode is charged into the common electric voltage data successively like this.Specifically: when applying as shown in Figure 4 high voltage for sweep trace G_n, pixel electrode P2 is charged into the common electric voltage data; When applying as shown in Figure 4 high voltage for sweep trace G_n+1, pixel electrode P3 is charged into the common electric voltage data.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (6)
1, a kind of liquid crystal cell matrix comprises:
The sweep trace of sweep signal is provided;
The data line of data-signal is provided;
The concentric line of common electric voltage is provided;
Pixel electrode;
The first film transistor is in response to the sweep trace of current line;
Second thin film transistor (TFT), in response to the sweep trace of next line, source electrode receives data-signal;
The 3rd thin film transistor (TFT), in response to the sweep trace of this current line, source electrode links to each other with the drain electrode of this second thin film transistor (TFT);
Wherein provide the data-signal of data line to the pixel electrode of current line, the common electric voltage of concentric line is provided to the pixel electrode of next line by the first film transistor by this second thin film transistor (TFT) and the 3rd thin film transistor (TFT).
2, liquid crystal cell matrix according to claim 1 is characterized in that, the transistorized grid of this first film is connected to the sweep trace of this current line, and source electrode is connected to this concentric line, and drain electrode is connected to the pixel electrode of this next line; The grid of this second thin film transistor (TFT) is connected to the sweep trace of this next line, and source electrode is connected to data line; The grid of the 3rd thin film transistor (TFT) is connected to the sweep trace of this current line, and drain electrode is connected to this pixel electrode.
3, a kind of LCD comprises a plurality of liquid crystal cell matrix, and those liquid crystal cell matrix are arranged with matrix form, and those liquid crystal cell matrix include:
The sweep trace of sweep signal is provided;
The data line of data-signal is provided;
The concentric line of common electric voltage is provided;
Pixel electrode;
The first film transistor is in response to the sweep trace of current line;
Second thin film transistor (TFT), in response to the sweep trace of next line, source electrode receives data-signal;
The 3rd thin film transistor (TFT), in response to the sweep trace of this current line, source electrode links to each other with the drain electrode of this second thin film transistor (TFT);
Wherein provide the data-signal of data line to the pixel electrode of current line, the common electric voltage of concentric line is provided to the pixel electrode of next line by the first film transistor by this second thin film transistor (TFT) and the 3rd thin film transistor (TFT).
4, LCD according to claim 3 is characterized in that, for each liquid crystal cell matrix, the transistorized grid of this first film wherein is connected to the sweep trace of this current line, and source electrode is connected to this concentric line, and drain electrode is connected to the pixel electrode of this next line; The grid of this second thin film transistor (TFT) is connected to the sweep trace of this next line, and source electrode is connected to data line; The grid of the 3rd thin film transistor (TFT) is connected to the sweep trace of this current line, and drain electrode is connected to this pixel electrode.
5, LCD according to claim 4 is characterized in that, when sweep trace n and n+1 are applied high voltage simultaneously by one scan line signal, is positioned at the pixel electrode P of this sweep trace n
nCharged into view data, be positioned at the pixel electrode P of this sweep trace n+1
N+1Charged into the common electric voltage data; When sweep trace n+1 and n+2 are applied high voltage simultaneously by this scanning-line signal, be positioned at the pixel electrode P of this sweep trace n+1
N+1Quilt is charged into view data and is remained to the moment that pulse next time arrives, and wherein n is a natural number.
6, LCD according to claim 5 is characterized in that, when this scanning-line signal is applied to wherein sweep trace, begins to apply another scanning-line signal successively so that pixel electrode charges into the common electric voltage data successively from article one sweep trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034063A CN100593749C (en) | 2008-02-29 | 2008-02-29 | LCD unit matrix and LCD device embodying the matrix |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810034063A CN100593749C (en) | 2008-02-29 | 2008-02-29 | LCD unit matrix and LCD device embodying the matrix |
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| CN101236342A true CN101236342A (en) | 2008-08-06 |
| CN100593749C CN100593749C (en) | 2010-03-10 |
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| CN200810034063A Expired - Fee Related CN100593749C (en) | 2008-02-29 | 2008-02-29 | LCD unit matrix and LCD device embodying the matrix |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852955B (en) * | 2009-04-02 | 2011-11-16 | 华映视讯（吴江）有限公司 | Liquid crystal display device capable of eliminating afterimages and method thereof |
| CN102269904A (en) * | 2011-07-20 | 2011-12-07 | 深圳市华星光电技术有限公司 | Liquid crystal display device and signal driving method thereof |
| CN101726896B (en) * | 2008-10-30 | 2013-03-20 | 乐金显示有限公司 | Liquid crystal display |
| CN112684626A (en) * | 2020-12-29 | 2021-04-20 | 滁州惠科光电科技有限公司 | Protection structure, color film substrate, array substrate and liquid crystal display panel |
-
2008
- 2008-02-29 CN CN200810034063A patent/CN100593749C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726896B (en) * | 2008-10-30 | 2013-03-20 | 乐金显示有限公司 | Liquid crystal display |
| CN101852955B (en) * | 2009-04-02 | 2011-11-16 | 华映视讯（吴江）有限公司 | Liquid crystal display device capable of eliminating afterimages and method thereof |
| CN102269904A (en) * | 2011-07-20 | 2011-12-07 | 深圳市华星光电技术有限公司 | Liquid crystal display device and signal driving method thereof |
| CN102269904B (en) * | 2011-07-20 | 2013-09-18 | 深圳市华星光电技术有限公司 | Liquid crystal display device and signal driving method thereof |
| CN112684626A (en) * | 2020-12-29 | 2021-04-20 | 滁州惠科光电科技有限公司 | Protection structure, color film substrate, array substrate and liquid crystal display panel |
| CN112684626B (en) * | 2020-12-29 | 2023-06-27 | 滁州惠科光电科技有限公司 | Protection architecture, various membrane base plate, array substrate and liquid crystal display panel |
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| Publication number | Publication date |
|---|---|
| CN100593749C (en) | 2010-03-10 |
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